Re: Unbuffered queries

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On 09/01/14 18:33, Eric Chamberlain wrote:
Correct. I ended up limiting the number of records I query at a time.
I'm not sure how much of the thread has been e-mailed to you but I have
an example that shows the method in which I was able to query N number
of records every iteration.


Unfortunately I don't seem to have seen that message. However that reminds me that for completeness I should really show an example fetching >1 row at a time in PDO (pgbench schema again):

    $fetch_num = 100;
$cursql = "DECLARE cur1 CURSOR FOR SELECT * FROM pgbench_accounts WHERE bid = ?";
    $sql    = "FETCH $fetch_num FROM cur1";

    $dbh->beginTransaction();
    $curstmt = $dbh->prepare($cursql);
    $curstmt->execute(array(rand(0, 100)));

    for (;;) {
        $stmt = $dbh->prepare($sql);
        $stmt->execute();
        $rowarray = $stmt->fetchAll(PDO::FETCH_ASSOC);
        if ($rowarray) {
            foreach ($rowarray as $row) {
                print "... " . $row['aid'] . " " . $row['bid'] . "\n";
            }
        } else {
            break;
        }
    }


Regards

Mark


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